Spacecraft:A vehicle or device designed for travel or operation outside earth’s atmosphere.

Rocket:A spacecraft that gets power from an engine full of chemical propellants.

Space probe:An unmanned spacecraft designed to explore space and transmit data back to Earth.

Rover:A vehicle used to explore the surface of an extraterrestrial body such as the moon or Mars.

Space exploration:The investigation of physical conditions in space and on celestial bodies through the use of satellites, space probes, or manned spacecraft.

Telescope:Optical instrument used to view distant objects.

International Space Station:An orbiting space station which began construction in 1998 with the cooperation of 16 nations.

Space station:A large artificial facility designed to be occupied for long periods and to serve as a work space to conduct research.

Satellite:Any spacecraft or natural object that orbits a larger, more massive object.

Space shuttle:A spacecraft designed to move supplies, equipment, and people between Earth’s surface and something in Earth’s orbit.